Good gracious! (2,6)
(Other definitions for by george that I've seen before include "Dated expression of surprise" , "exclamation of astonishment" , "Well I never" , "the dragon was killed" , "Fancy that" .)
(Other definitions for gee that I've seen before include "move faster" , "provided by substitute for ginger?" , "Gracious" , "Exclamation of surprise" , "Horse - surprised expression" .)